iP or domain name lookup

bigcourse.cn Server iP：

Current resolution：

domain resolution record：

2023-03-15-----2023-03-15 119.188.172.219

2023-03-15-----2023-03-15 182.40.29.232

2023-03-15-----2023-03-15 27.152.185.78

2023-03-15-----2023-03-15 223.111.24.90

2023-03-15-----2023-03-15 116.211.154.204

2023-03-15-----2023-03-15 124.239.227.127

2023-03-15-----2023-03-15 119.84.72.193

2022-07-08-----2022-12-21 223.111.24.116

2022-07-08-----2022-12-21 123.129.244.249

2022-07-08-----2022-12-21 58.216.118.246

2022-12-21-----2022-12-21 223.111.24.120

2022-12-21-----2022-12-21 124.239.227.243

2022-07-08-----2022-07-08 222.85.26.241

2022-07-08-----2022-07-08 140.249.61.168

2022-07-08-----2022-07-08 110.188.26.198

2022-07-08-----2022-07-08 183.232.159.227

2022-07-08-----2022-07-08 36.102.212.107

2022-07-08-----2022-07-08 112.54.108.113

2022-07-08-----2022-07-08 221.236.11.121